GPS Test

GpsTest.ino connects to the optional GPS module and prints location and time data it provides via USB Serial. If there is Serial output, it should work. The module can take several minutes to get a good connection and locate you.
You might have to go outside for it to work.

Note

Install the TinyGPSPlus Arduino Library through the Arduino IDE.

Tip

To learn more about the GPS library’s capabilities, check its Examples in Arduino IDE under File > Examples > TinyGPSPlus.

GpsTest.ino

#define GPS_RX 43
#define GPS_TX 44
#define GPS_BAUD 9600

#include <TinyGPSPlus.h>
#include <HardwareSerial.h>

TinyGPSPlus gps;
HardwareSerial GPSSerial(1);

void setup() {
  Serial.begin(115200);
  while(!Serial) delay(100);
  Serial.println("STARTED!");

  GPSSerial.begin(GPS_BAUD, SERIAL_8N1, GPS_TX, GPS_RX);
}

void displayInfo() {
  //Serial.println("==========");
  Serial.print(F("Location: "));
  if (gps.location.isValid()) {
    Serial.print(gps.location.lat(), 6);
    Serial.print(F(","));
    Serial.print(gps.location.lng(), 6);
  } else {
    Serial.print(F("INVALID"));
  }

  Serial.print(F("  Date/Time: "));
  if (gps.date.isValid()) {
    Serial.print(gps.date.month());
    Serial.print(F("/"));
    Serial.print(gps.date.day());
    Serial.print(F("/"));
    Serial.print(gps.date.year());
  } else {
    Serial.print(F("INVALID"));
  }

  Serial.print(F(" "));
  if (gps.time.isValid()) {
    if (gps.time.hour() < 10) Serial.print(F("0"));
    Serial.print(gps.time.hour());
    Serial.print(F(":"));
    if (gps.time.minute() < 10) Serial.print(F("0"));
    Serial.print(gps.time.minute());
    Serial.print(F(":"));
    if (gps.time.second() < 10) Serial.print(F("0"));
    Serial.print(gps.time.second());
    Serial.print(F("."));
    if (gps.time.centisecond() < 10) Serial.print(F("0"));
    Serial.print(gps.time.centisecond());
  } else {
    Serial.print(F("INVALID"));
  }
  Serial.println();
  //Serial.println("==========");
}

void loop() {
  while (GPSSerial.available() > 0) {
    char c = GPSSerial.read();
    //Serial.print(c);
    if (gps.encode(c)) displayInfo();
  }
}